KR100902097B1 - Tension control device of yarn supplier and the method for the same - Google Patents

Abstract

An apparatus for control tension of a yarn supplier and a method thereof are provided to increase tension properly by winding the yarns using a return roll in case the tension of the yarns is below allowable tension after detecting the tension supplied into a loom. An apparatus(1) for control tension of an original yarn supplier comprises the followings: a body(2) located on a movement route of the yarn and prepared between a bobbin and a loom; a supply unit(5) having a supply roll(4) and prepared on a yarn supply side of the body; an inflow unit consisting of a roller roll(6) and a rotational direction detecting sensor; a first tension unit(14) consisting of a rotating unit(10), a tension roll(12), and an angle sensor; and a tension control unit consisting of a return roll(16) winding or unwinding the yarns with a motor(15) and prepared on a yarn movement route between the first tension unit and the supply unit.

Description

Tension control device of yarn supplier and the method for the same

The present invention relates to a tension control device and a method of a yarn feeder for controlling to maintain a proper tension when feeding the yarn (yarn feeding) from the bobbin bobbin (bobbin) to the knitting machine such as circular knitting machine, sock machine, etc. More specifically, it is provided between the bobbin and the loom to maintain the tension of the yarn supplied to the loom properly so that high-quality circular knitting and knitting can be sensed and the tension of the yarn supplied to the loom is measured according to the tension of the yarn. The present invention relates to a tension control device for a yarn feeder and a method for supplying proper tension to a loom by increasing or decreasing the tension of the yarn.

In general, textile machinery is a general term for machines and / or devices used in the manufacture, processing, and processing of fibers. Among textile products, straight yarns are formed into flat knitted fabrics, woven fabrics, and nonwoven fabrics. Non-woven fabrics, knitting machines for producing braid fabrics, and circular knitting machines for knitting mainly knitted fabrics among circular knitting machines, and wind machines for pulling yarns from a spinning machine and winding them in a corn.

Such a textile machine (also referred to as a "weaving machine") is intended to receive a yarn through a process of winding the yarn in a needle or a cone by receiving the yarn from the bobbin in which the yarn is wound.

Therefore, when the yarn is supplied to the loom, it is possible to manufacture high-quality fabrics only when the feed speed (speed of yarn) and the tension of the yarn are properly maintained.

In other words, if the tension of the yarn to be fed (yarn feeding) is not kept constant, the quality of the fabric is poor, it is impossible to obtain a high-quality fabric, causing a problem that a defect occurs.

Therefore, it is very important for the loom and the core technology to obtain high-quality products by maintaining the tension is appropriate for maintaining the tension of the yarn to be fed at the time of yarn feeding.

As the tension control device 50 for properly maintaining the tension during yarn feeding, the importance of which is increased in the textile machine as shown in FIG. 1, is provided between the bobbin and the loom and the movement of the yarn y. The elastic wheel 53 provided at the end of the elastic rod 52 provided in the base 51 positioned in the path is provided to have a constant tension.

That is, the yarn (y) is caught by the elastic wheel 53 and moved to have a tension by applying the elastic force applied by the elastic rod 52, so that the elastic force of the elastic rod 52 during sudden feeding It is designed to have a tension according to it.

However, the conventional tension control device as described above has a problem in that the tension of the yarn is simply dependent on the turntable rod of the elastic rod, so that the tension cannot be maintained precisely, and the yarn is shorted or loosened because the tension is not always kept constant. There was a problem in that it was impossible to obtain high quality production activities (knitting, circular knitting, etc.).

Therefore, in recent years, yarn feeding devices and tension control devices have been widely used in order to maintain a constant tension of yarns fed at the time of yarn feeding.

As one of the yarn feeding device and tension control device proposed in the near-ground as described above, there is a Korean Utility Model Registration No. 20-154296 (name: yarn tension maintaining device for circular knitting machine), the Korean Utility Model Registration No. 20- The yarn tension retaining device for circular knitting machine of No. 154296 has a support having a lower bent portion formed with an introduction hole into which yarn is drawn in and an upper bent portion formed with an extraction hole from which yarn is drawn out, and a spring and an adjustment screw unit fixed to the middle of the support. In the yarn tension holding device for a known circular knitting machine including a sandwich plate that is elastically supported by the support, characterized in that the support is formed integrally with the anti-entangled extension frame is formed extending while wrapping the sandwich plate forward.

In other words, the yarn tossed at the time of swinging bumps the tangled extension frame to prevent excessive undulation of the yarn and to prevent tangling of the adjusting screw portion supporting the pinned plate of the yarn.

However, the conventional yarn tension maintaining device for circular knitting machines of the conventional Korean Utility Model Registration No. 20-154296 as described above can prevent the yarn from shaking and tangling due to stress on the yarn to be fed, but precise tension control in the event of excessive tension. There was an issue that could not be done.

In other words, precise tension cannot be controlled, which causes another problem of failing to produce high quality products.

Another example of yarn feeding device and tension control device is Korean Patent Registration No. 10-468459 (name: tension control device of yarn feeder), and tension control device of yarn feeder of Korean Patent Registration No. 10-468459. As disclosed in the publication, a yarn guide diagram in which yarns sent from bobbins are installed on the upper part of the holder installed in the knitting machine, and under the guides in a constant direction while maintaining a constant tension of the yarn wound on the accumulation drum of the rotating wheel. A guide for inducing yarn is installed, and a signal lamp is installed at the lower part of the holder, and the middle part detects the tension of the yarn supplied to the knitting machine, that is, the tension above the maximum allowable tension, and then operates the knitting machine after a certain time. In the yarn feeder tension control device comprising a creep to stop, a pair of hemp in the middle and top of the holder The micro switch is installed, and this micro switch is inputted to the central control unit of the knitting machine. The raising of the rotation cap according to the operation command of the knitting machine is completed by the connection of the micro switch on the upper part of the holder. The descent of is completed by the connection of a microswitch installed in the center of the holder; The electromagnet is installed at the center of the holder to control the voltage by adjusting the voltage according to the yarn, and the electromagnet constitutes a maintenance means together with the metal band attached to the rotation cap, which is above the minimum allowable tension and within the maximum allowable tension. It detects the abnormal tension yarn within the range and repairs itself.However, when the turning cap descends, the metal band approaches the electromagnet and generates electromagnetic force whenever the turning cap descends, and the rotation cap causes the braking whenever the electromagnetic force occurs. The braking force does not exceed the maximum allowable tension, and the electromagnet is not operated when the cap is raised.

However, the tension control device of the yarn feeder of Korea Patent Registration No. 10-468459 described above can actually accumulate the yarn in the accumulating drum when the knitting machine is stopped. In order to absorb, productivity is greatly reduced because the operation of the knitting machine has to be stopped. Likewise, the yarn feeding is performed by the rotating belt, so that the feeding of the variable speed is impossible and the inertia force due to the rotation of the rotating wheel is not considered at all. There was a structural problem that causes a lot of operational errors.

In order to solve the problem of the tension control device of the yarn feeder of Korean Patent Registration No. 10-468459, another example of a yarn feeding device has been proposed, which is Korean Patent Registration No. 10-803546 (name: storage active feeding device) The storage active steepness of the Korean Patent Registration No. 10-803546, the timing of the reverse spiral motion to perform the simultaneous function of yarn accumulation as disclosed in the publication; An internal controller having a stroke sensor for checking a lead distance for controlling the start and stop of operation of the motor corresponding to each timing of the spiral motion returning to the original position after accumulation; A holder part in which the internal controller is embedded; An accumulator coupled to the holder part freely rotatable and capable of braking by an electromagnet type braking device; A lead part fastened at an upper part of the accumulation part to perform a reverse spiral motion by using the motor mounted inside the accumulation part and to perform a spiral motion in accordance with a rotational direction of the accumulation part when the motor is stopped; And a sensor unit provided in the holder unit to provide a signal to the internal controller about an operating state of the lead unit, wherein the lead unit is functionally independent from the accumulation unit for the yarn-axis simultaneous feeding function.

However, the storage active steepness of the Korean Patent Registration No. 10-803546 as described above has a problem in that the structure is complicated and difficult to manufacture and repair, there is a lot of concerns about the balance.

In addition, as another example of the yarn feeding device and the tension control device, Korean Patent Registration No. 10-544335 (name: yarn tension control yarn feeding device) has been proposed, and the yarn tension control yarn of Korean Patent Registration No. 10-544335 has been proposed. Yarn guides respectively installed on the inlet and outlet sides of the case is provided with a cover as disclosed in the publication; An electronic brake embedded in the case to adjust torque of the rotor; A pulley connected to the rotor; A circuit board embedded in the case; A counter sensor for detecting the rotation speed of the pulley; A first amplifier for amplifying and outputting the digital signal output from the counter sensor; A third amplifier for feeding back and amplifying a signal applied to sense a torque output of the electronic brake; An analog / digital converter for converting an analog signal output from the third amplifier into a digital signal corresponding thereto; The torque output of the electromagnetic brake is determined by the output signal of the analog / digital converter, the tension is determined by the torque of the electromagnetic brake output from the first amplifier, and the tension control signal is generated to maintain the determined tension and the set tension. A central processor for automatically controlling the motor and generating a torque control signal of the electromagnetic brake; Communication driver for transmitting the tension measurement signal output from the central processor to the central system; A digital / analog converter for converting a torque control signal of the digital electronic brake generated by the central processor into an analog signal rising thereto; And a second amplifier for amplifying the torque control signal output from the digital / analog converter and applying it to the electromagnetic brake.

However, the steepness control yarn of Korean Patent Registration No. 10-544335 as described above can be controlled and / or adjusted when the yarn tension is different from the proper tension by a predetermined width, but the tension of the yarn is appropriate. Compared with the above, when a large difference occurs, there is a structural problem that is difficult to control and / or adjust.

In addition, similar to the yarn tensioning yarn feeding device of Korean Patent Registration No. 10-544335, an invention for digitizing and managing yarn tension is proposed, which is disclosed in Korean Patent Publication No. 10-2006-3660 (Name: Yarn Tension Control Yarn). Device and a control method thereof, and a yarn feeding device for yarn tension control of Korean Patent Publication No. 10-2006-3660 and a control method thereof include: a case having an insertion hole and an arc-shaped guide hole; A yarn guide installed at the inlet side and the outlet shaft of the case; A base fixed to an upper portion of the insertion hole and having a shaft hole; A pulley having a rotor installed at an upper portion of the base and fitted into a shaft hole; An electronic brake mounted on the insertion hole to adjust the torque of the rotor; A potentiometer having a tension bar fitted to the guide hole; A servo motor for adjusting the tension bar; A counter sensor for detecting the rotation speed of the pulley; A first amplifier for amplifying the digital signal output from the counter sensor; A third amplifier for amplifying a signal applied to the electromagnetic brake; An analog / digital converter for converting an analog signal output from the third amplifier into a digital signal; A fourth amplifier for amplifying the output signal of the potentiometer; The torque of the electronic brake is determined by the output signal of the analog / digital converter, the tension is determined by the value output from the first amplifier, the tension of the thread is determined by the output signal of the fourth amplifier, and the set tension is determined according to the determined tension. A central processor for generating a tension control signal to automatically maintain the tension and for generating a torque control signal of the electromagnetic brake; A communication driver for transmitting the tension measurement signal output from the central processor to the central system; A digital / analog converter for converting the torque control signal of the electronic brake generated by the central processor into an analog signal; And a second amplifier for amplifying the torque control signal output from the digital / analog converter and applying it to the electromagnetic brake.

However, the yarn tensioning yarn feeding device and its control method of Korean Patent Publication No. 10-2006-3660 are structurally similar to yarn tensioning yarn feeding device of Korea Patent Registration No. 10-544335 compared to the appropriate tension. If the difference occurs in the width of the control and / or control is possible, but when the tension of the yarn compared to the appropriate tension when a large difference occurs, the control and / or adjustment was difficult.

The present invention has been proposed to solve the problems of the tension control device of the conventional yarn feeder and the methods as described above, the object of the present invention is provided between the bobbin and the loom, the appropriate tension according to the tension of the yarn supplied to the loom In order to prevent the occurrence of defects during high-quality circular knitting and knitting by maintaining the precision, the tension of the yarn supplied to the loom is sensed, and the supply of the yarn is restricted according to the detected yarn tension, as well as The present invention provides a tension control device for a yarn feeder and a method for supplying the loom to return to have a proper tension.

The tension control device of the yarn feeder of the present invention for achieving the object of the present invention as described above in the feeder for supplying yarn to the loom; A gas provided between the bobbin and the loom and positioned in the yarn path; A supply means provided on the yarn supply side of the gas and made up of a supply roll condensed with a supply motor to rotate and wind the yarn; An inflow means provided on the yarn inlet side of the gas, the roller roll being rotated by receiving power, and the yarn being wound and moving, and a rotation direction sensor for sensing the rotational direction of the roller roll; It is provided on the yarn movement path of the space between the supply means and the inlet means and is connected to the elastic spring provided in the body and has an elastic force, and is provided at the end of the elastic rod extending from the pivot piece and inflow from the inlet means. A first tension means consisting of a tension roll which spans the yarn and connects to the supply roll, and an angle detecting sensor installed to be interlocked with the rotation piece to sense a rotation angle of the rotation piece; And a tension adjusting means which is provided on the yarn movement path between the first tension means and the supply means, and is made of a return roll which is rotated by a forward / reverse rotation motor to wind or unwind the yarn.

Wherein the tension adjusting means collecting position on the moving path of the yarn is characterized in that the sudden detection sensor for detecting the entry of the return roll of the yarn is provided.

A limiting piece is provided at the position of the maximum rotation angle of the elastic bar of the base provided with the rotating piece, characterized in that it is possible to prevent excessive rotation of the elastic bar.

The tip of the return roll is characterized in that a plurality of collecting rods are formed to collect the yarn during the forward rotation of the return roll.

The gas in the space between the tension control means and the supply means is a yarn guide means consisting of a through tube through which the yarn penetrates, and a solenoid cylinder which is fixed to the end of the through tube to reciprocate up and down the through tube. It is characterized by including.

The tension control method of the yarn feeder of the present invention for achieving the object of the present invention as described above is to rotate the feed roll and the roller roll according to the start of operation to wind the yarn in the feed roll 5 to 6 rotation to increase the tension of the yarn A first step of maintaining a tension less than the corrected tension; When a certain amount of yarn is wound on the supply roll through the first step, the solenoid valve is turned on and the return roll is rotated reversely to collect the yarn with a collecting rod, and to be wound on the return roll, and the yarn wound on the supply roll and the first yarn. A second step of titrating the tension of the yarn located in the tension means; When the yarn wound on the feed roll has the proper tension through the second step, the angle sensor detects the tension of the yarn and sends it to the control means and reads it from the control means to determine whether the yarn tension is below the minimum allowable tension. Sensing and reading; If the tension of the yarn detected by the third step is more than the minimum allowable tension, the return roll is rotated forward and the yarn is supplied to the supply roll. When all the yarns wound on the return roll have been supplied, the sudden detection sensor stops the return roll. And the yarn spinning by rotating the feed roll forward, and if the yarn tension is less than the minimum allowable tension, proceed to the first step and stop the feeding roll to stop the yarn feeding. Doing.

Tension control device and method of the yarn feeder of the present invention made as described above is provided between the bobbin and the loom to detect and read the tension of the yarn supplied to the loom, and when the tension is less than the allowable tension to take the tension by winding the yarn using a return roll If the tension is increased and supplied, and the tension of the yarn is higher than the allowable tension, loosen the yarn wound on the return roll and reduce the tension under the proper condition to maintain the proper tension according to the yarn condition. There is an effect that can supply a yarn having an appropriate tension to the loom to prevent the occurrence of defects.

Hereinafter, a tension control device and a method of a yarn feeder according to a preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

2 to 8 is a view showing a tension control device of the yarn feeder according to an embodiment according to the present invention, the tension control device 1 of the yarn feeder of this embodiment is a feeder for supplying yarn to the loom; A gas (2) provided between the bobbin and the loom and positioned in the movement path of the yarn (y); A supply means (5) provided on the yarn supply side of the base (2) and composed of a supply roll (4) condensed with the supply motor (3) to rotate and wind and feed the yarn (y); Is provided on the yarn inlet side of the gas (2) is rotated by the transmission of power, the roller roll (6) is wound and moved by the yarn (y), the rotation direction sensor for sensing the rotational direction of the roller roll (6) An inflow means (8) consisting of (7); A rotating piece 10 provided on the circular path of the space between the supply means 5 and the inflow means 8 and connected to the elastic spring 9 provided in the base 2 to have an elastic force, and the rotation A tension roll 12 provided at the end of the elastic rod 11 extending from the piece 10 and having a yarn y introduced from the inflow means 8 to connect to the supply roll 4; A first tension means (14) installed in association with the rotation piece (10) and comprising an angle detection sensor (13) for detecting the rotation angle of the rotation piece (10); A return roll provided on the circular movement path between the first tension means 14 and the supply means 5 and rotated by a forward / reverse rotation motor 15 to wind or unwind the yarn y ( It has a tension adjusting means (17) consisting of 16).

Preferably, the base 2 is fixed or connected to a loom, not shown, and the supply roll 4 and the return roll 16 are most preferably made of a cylindrical drum.

The tension roll 12 has an elastic force of a predetermined size by the elastic spring (9) to apply a tension to the yarn (y) across the tension roll (12).

At the collecting position of the tension adjusting means 17 on the movement path of the yarn y, a sudden detecting sensor 18 is provided to detect the entry of the yarn y into the return roll 16, and the angle detecting sensor 13 is provided. Is lower than the reference angle and the sudden detection sensor 18 feeds the accumulated yarn y of the return roll 16 if it is not detected by the inflow means 8, and the angle detection sensor 13 is in the same condition. If the sudden detection sensor 18 is detected by the inflow means 8, the feed motor 3 is operated by stopping the operation of the motor for driving the return roll 16 to feed the yarn y to the feed roll 4 Supply to the side can adjust the tension of the yarn (y).

The restriction piece 19 is provided in the position of the maximum rotation angle of the elastic rod 11 of the base 2 provided with the rotation piece 10 so as to prevent excessive rotation of the elastic rod 11.

That is, as the rotational position of the elastic rod 11 having an appropriate angle between the maximum rotation angle and the lowest total rotation angle, the tension of the yarn y spanning the tension roll 12 is appropriate.

When the maximum rotation angle is exceeded, the tension of the yarn (y) has a tension less than or equal to an appropriate tension, and when the angle is smaller than the minimum rotation angle, the tension of the yarn (y) has a tension or more than an appropriate tension, By detecting the rotation angle of the elastic rod 11, it is possible to read whether or not the tension of the yarn is appropriate.

At the tip of the return roll 16, a plurality of collecting rods 20 are formed to collect yarns during the forward rotation of the return roll 16. The yarns y are formed by using the collecting rods 20. It is easy to collect and wind up on the return roll 16.

In the gas 2 in the space between the tension control means 17 and the supply means 5, a through tube 21 through which yarn y passes, and an end of the through tube 21 is fixed to the through tube. A yarn guide means 23 is provided, which comprises a solenoid cylinder 22 capable of reciprocating up and down 21, and the return roll 16 collects the yarn y with the collecting rod 20. When the yarn (y) is raised to a static height so that it can be captured smoothly.

In addition, the through tube 21 is axially coupled to the fixed shaft 24 and rotated about the fixed shaft 24 to move upwards when the solenoid cylinder 22 is turned on, the solenoid cylinder ( It is made to move downward at the time of 22 off. At this time, the solenoid cylinder 22 operates in an on state and only plays a role of inducing the yarn to a position where the return roll 16 can be collected, but does not affect the flow of the yarn.

In the inlet means (8), the roller roll (6) is rotated by a power source (not shown) to allow the yarn (y) to flow in or out of the bobbin.

In addition, the tension control method of the yarn feeder according to an embodiment of the present invention is made by sequentially applying the steps as shown in Figure 9, the tension control method of the yarn feeder of the present embodiment according to the start of the supply roll (4) and the roller roll (6) to rotate the yarn (y) in the feed roll (4) in 5 to 6 rotations so that the tension of the yarn (y) is less than the corrected tension in the first step Wow; When the yarn (y) is wound around the feed roll (4) through the first step, the solenoid valve (22) is turned on and the return roll (16) is rotated back to the collecting rod (20). ) And a second step of appropriately tensioning the yarn (y) wound on the feed roll (4) and the yarn (y) located in the first tension means 14 by winding the return roll (16); When the yarn (y) wound on the feed roll (4) has the proper tension through the second step, the angle sensor 13 detects the tension of the yarn (y) and sends it to the control means and read it out from the control means. A third step of detecting and reading whether the tension of the yarn (y) is less than or equal to the minimum allowable tension; If the tension of the yarn y detected by the third step is equal to or greater than the minimum allowable tension, the return roll 16 is rotated forward to supply the wound yarn y of the return roll 16 to the return roll 16. When all of the wound yarns y have been supplied, if the yarn feed sensor 18 detects this, the return roll 16 is stopped and the feed roll 4 is rotated forward to feed yarns y and the yarns y If the tension is less than the minimum allowable tension and proceeds to the first step as well as the fourth step to stop the feeding roll to stop the supply roll (4).

Unexplained code "25" is a guide guide, "26" is a guide roller.

Referring to the operation of the tension control device and method of the yarn feeder of the present embodiment made as described above in detail as follows.

First, as the first step proceeds according to the start of the operation of the control means, not shown, the feed roll 4 and the roller roll 6 are rotated to feed the yarns y to the feed rolls 4 to 6. It is wound up by rotation.

At this time, the yarn (y) is not supplied to the loom.

That is, the yarn is wound on the feed roll 4 by 5 to 6 turns through the first step, and the tension of the yarn y positioned in the first tension means 14 is maintained to be less than the proper tension. have.

As described above, when the yarn y is sufficiently wound on the supply roll 4 through the first step, the yarn y positioned on the first tension means 14 and the supply roll 4 has a tension less than a proper tension. In order to correct this, the solenoid cylinder 22 is turned on to operate the yarn guide means 23 so that the yarn y is collected on the collecting rod 20, and the return roll 16 is rotated in reverse. The yarn y is wound around the return roll 16 so that the yarn y has an appropriate tension.

As the yarn y is wound on the return roll 16 as described above, when the tension of the yarn y is detected by the angle detecting sensor 13 to the proper tension or more, the return roll 16 is rotated forward to make the yarn y Loosen) to fine tune the yarn (y) to have a proper tension.

That is, when the tension of the yarn y sensed by the angle sensor 13 is less than the proper tension, the return roll 16 is reversely wound and wound up to increase the tension, and the tension of the yarn y is appropriate. If larger, the return roll 16 is rotated forward to lower the tension of the yarn y to have a proper tension.

When the yarn y is located on the return roll 16, the sudden detection sensor 18 is configured to detect this, and the yarn y is positioned on the return roll 16 by the sudden detection sensor 18. In this case, the supply roll 4 is designed to maintain the rotation stopped.

In addition, when the yarns y are not all pulled yarns y into the return roll 16 in the return roll 16, the sudden detection sensor 18 detects this and stops the rotation of the return roll 16. It is supposed to be.

Therefore, the forward rotation of the return roll 16 is executed when the angle sensor 13 detects a state in which the tension of the yarn y is greater than the proper tension and the sudden detection sensor 18 detects that the yarn is not in progress. have.

In addition, the reverse rotation of the return roll 16 is performed when the angle sensor 13 detects a state in which the tension of the yarn y is less than the proper tension.

Then, the tension of the yarn (y) is adjusted to the proper tension through the second step, so that the sudden detection sensor 18 detects the inflow object, and the angle detection sensor 13 has the proper tension of the yarn y. If the rotation direction sensor 7 detects the inflow of the yarn (y) and rotates the feed roll (4) as shown in Figure 4 to feed the yarn (y) to the loom and to operate the loom Yarn (y) is knitted and knitted.

And the sudden detection sensor 18 detects the entry of the yarn (y) to the return roll 16, or the angle detection sensor 13 detects a state in which the tension of the yarn (y) is less than the proper state, When only one condition is sensed such that the rotational direction sensor 7 detects no inflow of the yarn y, the operation of the supply roll 4 is stopped to adjust the tension of the yarn y.

When the yarn y is reduced while the yarn y is fed to the loom through the fourth step, as shown in FIG. 5, the tension roll 12 in which the yarn y is stretched is fixed. The rod 11 is rotated upward by the elastic force of the elastic spring 9, the angle detection sensor when the rotation angle of the elastic rod 11 is more than the allowable angle (when the tension of the yarn is less than the allowable tension) When (13) detects this and sends a signal to the control means, the control means reads it out and stops the inflow of yarn (y) to detect the rotation direction sensor (7) and turns on the solenoid cylinder (22). The yarn y is raised and lowered to the position where the return roll 16 collects.

As shown in FIG. 6, when the solenoid cylinder 22 is turned on and the yarn y is elevated to the position where the return roll 16 is collected, the return roll 16 is rotated in reverse to allow the collecting rod 20 to be yarn. When the (y) is collected and wound on the return roll 16, the yarn y is pulled from the supply roll 4 side and wound onto the return roll 16 as well as the tension roll of the first tension means 14. The yarn (y) over (12) is pulled up and wound around the return roll 16 while increasing the tension.

At this time, the sudden detection sensor 18 is to detect the entry of the yarn (y) into the return roll (16).

When the yarn y is wound on the return roll 16 as described above, the tension of the yarn y placed on the supply roll 4 and the first tension means 14 is increased.

That is, when the tension of the yarn (y) located in the feed roll 4 and the first tension means 14 is reduced to less than the proper tension, the return roll 16 is driven to wind the yarn (y) by the yarn (y) It is to be able to feed by adjusting the tension to increase.

As described above, when the tension of the yarn (y) located in the first tension means 16 and the supply roll 4 is increased by the return roll 16, the tension of the yarn (y) is increased beyond the appropriate tension Figure 7 As shown in the tension rod 12 of the elastic rod 11 is rotated below the minimum allowable angle, the angle sensor 13 is to detect this.

When the tension of the yarn y is read as described above, as shown in FIG. 8, as shown in FIG. 8, the return roll 16 is rotated forward to supply the yarn y wound on the return roll 16 to supply the first yarn y. The tension of the yarn (y) positioned on the tension means (14) and the feed roll (4) is reduced so that the tension of the yarn (y) is appropriate, and the yarn (y) is pulled on the return roll (16). When the inflow object is introduced into the sudden death sensor 18, when the entrance is detected, stable sudden death occurs according to the forward rotation of the supply roll 4.

As described above, when the tension control device and the method of the yarn feeder of the present embodiment are continuously applied and the yarn tension is applied and maintained through the first tensioning means and the supplying means, the return roll is released when the tension is out of the proper tension state. It is possible to precisely adjust the tension of the yarn by adjusting the tension of the yarn by collecting and winding or unwinding the yarn with a return roll.

As described above, when the tension of the yarn (y) is properly adjusted and the yarn (y) tension is below the appropriate tension during the sudden feeding process, when the angle sensor (13) detects this, the second step is sequentially performed. The yarn (y) is properly adjusted to advance the yarn.

As described above, the tension control device and method of the yarn feeder of the present invention are applied when the tension is abnormal while the tension of the yarn being applied is applied by the spring tension applied by the elastic spring and the friction force wound by the supply roll. It is characterized by the technical configuration that the fine adjustment through the method and apparatus such as pulling or releasing from the first tension means and the supply means, the present invention is not limited to the specific preferred embodiment described above, Without departing from the gist of the invention claimed in the claims, it is noted that any one of ordinary skill in the art to which the invention pertains may make various modifications.

1 is a front view showing a tension adjusting device of the conventional yarn,

Figure 2 is a perspective view showing a tension control device of the yarn feeder according to an embodiment of the present invention,

Figure 3 is an illustration of the same rear perspective view,

4 to 8 is a schematic illustration showing the same state of action,

9 is an exemplary flow diagram briefly showing a tension control process of the yarn feeder according to an embodiment of the present invention.

[Description of Signs for Important Parts of Drawing]

1: tension control device, 2: gas,

3: feed motor, 4: feed roll,

5: supply means, 6 roller roll,

7: rotation direction detection sensor, 8: inflow means,

9: elastic spring, 10: rotating piece,

11: elastic rod, 12: tension roll,

13: angle detection sensor, 14: first tension means,

15: forward / reverse rotation motor, 16: return roll,

17: tension control means, 18: the sudden detection sensor,

19: limited edition, 20: collecting rod,

21: through tube, 22: solenoid cylinder,

23: yarn guide means, 24: fixed shaft,

25: guide guide, 26: guide roller.

Claims (6)

In the feeder for supplying yarn to the loom; A gas provided between the bobbin and the loom and positioned in the yarn path; A supply means provided on the yarn supply side of the gas and made up of a supply roll condensed with a supply motor to rotate and wind the yarn; An inflow means provided on the yarn inlet side of the gas, the roller roll being rotated by receiving power, and the yarn being wound and moving, and a rotation direction sensor for sensing the rotational direction of the roller roll; It is provided on the yarn movement path of the space between the supply means and the inlet means and is connected to the elastic spring provided in the body and has an elastic force, and is provided at the end of the elastic rod extending from the pivot piece and inflow from the inlet means. A first tension means consisting of a tension roll which spans the yarn and connects to the supply roll, and an angle detecting sensor installed to be interlocked with the rotation piece to sense a rotation angle of the rotation piece; Yarn feeder characterized in that it is provided on the yarn movement path between the first tension means and the supply means and rotated by a forward / reverse rotation motor and made of a tension roll made of a return roll to wind or unwind the yarn. Tension control device. The method of claim 1; The tension control device of the yarn feeder, characterized in that the yarn feed sensor for detecting the entry of the return roll of the yarn is provided at the tension adjusting means collecting position on the path of the yarn. The method of claim 1; The tension control device of the yarn feeder, characterized in that the restriction piece is provided at the position of the maximum rotation angle of the elastic rod of the base provided with the rotating piece. The method of claim 1; The tension control device of the yarn feeder, characterized in that a plurality of collecting rods are formed at the tip of the return roll to collect the yarn during the forward rotation of the return roll. The method of claim 1; The gas in the space between the tension control means and the supply means is a yarn guide means consisting of a through tube through which the yarn penetrates, and a solenoid cylinder which is fixed to the end of the through tube to reciprocate up and down the through tube. Tension control device of the yarn feeder characterized in that it comprises. A first step of rotating the feed rolls and the roller rolls in accordance with the start of operation so that the yarns are wound on the feed rolls in 5 to 6 rotations so that the tension of the yarns is kept smaller than that of the circular knitting and knitting; When a certain amount of yarn is wound on the supply roll through the first step, the solenoid valve is turned on and the return roll is rotated reversely to collect the yarn with a collecting rod, and to be wound on the return roll, and the yarn wound on the supply roll and the first yarn. A second step of enabling to knit and knit the tension of the yarn located in the tension means; If the yarn wound on the feed roll has the tension to knit and knit through the second step, the angle sensor detects the yarn's tension, sends it to the control means, reads it from the control means, and the yarn's tension is the minimum allowable tension. A third step of detecting and reading whether or not it is less than or equal to; If the tension of the yarn detected by the third step is more than the minimum allowable tension, the return roll is rotated forward and the yarn is supplied to the supply roll. When all the yarns wound on the return roll have been supplied, the sudden detection sensor stops the return roll. And the yarn spinning by rotating the feed roll forward, and if the yarn tension is less than the minimum allowable tension, proceed to the first step and stop the feeding roll to stop the yarn feeding. Tension control method of yarn feeder.

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